1520165120 has 36 divisors (see below), whose sum is σ = 3641273580. Its totient is φ = 608065536.

The previous prime is 1520165117. The next prime is 1520165137. The reversal of 1520165120 is 215610251.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1094815744 + 425349376 = 33088^2 + 20624^2 .

It is a super-2 number, since 2×1520165120² = 4621803984129228800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592535 + ... + 595094.

Almost surely, 2^1520165120 is an apocalyptic number.

1520165120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520165120 is an abundant number, since it is smaller than the sum of its proper divisors (2121108460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1520165120 is an equidigital number, since it uses as much as digits as its factorization.

1520165120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187650 (or 1187636 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1520165120 is about 38989.2949410476. The cubic root of 1520165120 is about 1149.8210483993.

Adding to 1520165120 its reverse (215610251), we get a palindrome (1735775371).

The spelling of 1520165120 in words is "one billion, five hundred twenty million, one hundred sixty-five thousand, one hundred twenty".